Characterization of RF signal transmission using FSO links considering atmospheric effects

Alam Mohammad Shah, Pham Tien Dat, Kamugisha Kazaura, Kazuhiko Wakamori, Toshiji Suzuki, Kazunori Omae, Mitsuji Matsumoto, Yuji Aburakawa, Koichi Takahashi, Takuya Nakamura, Takeshi Higashino, Katsutoshi Tsukamoto, Shozo Komaki

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Radio on Free-Space Optics (RoFSO) communication systems have attracted a considerable attention for a variety of applications where optical fibers are not feasible, especially in rural areas, to provide ubiquitous wireless services quickly and more effectively. RoFSO links can be used to transmit signals like cellular W-CDMA, terrestrial digital TV or WLAN signals. In spite of its potential, such links are highly dependent on the deployment environment characteristics in particular the weather conditions. Severity and duration of the atmospheric effects have direct impact on the availability of the links as well as on the quality of RF signal transmitted over it. Thus, the necessity of investigating the effects of various weather conditions on RF signal transmission using FSO links. In collaboration with several institutions, we are currently developing an advanced Dense Wavelength Division Multiplexing (DWDM) RoFSO antenna capable of transporting multiple RF signals. As preliminary work, we are conducting experiments on a 1 km link using an off-the-shelf Radio Frequency - FSO (RF-FSO) antenna, with the objective of obtaining and characterizing performance related parameters of RF-FSO transmission in operational environment. As an example, we examine the influence of atmospheric turbulence on the transmission quality of WCDMA signal. Among the performance metric of interest is the Adjacent Channel Leakage Power Ratio (ACLR) which will be measured, analyzed and correlated with the weather conditions. An atmospheric fluctuation model for estimating the communication quality of RF signal transmission on FSO links is being developed. Also the obtained results will be used for the deployment environment characterization as well as baseline for the design and performance evaluation of new advanced DWDM RoFSO communication systems we are currently developing.

本文言語English
ホスト出版物のタイトルProceedings of SPIE - The International Society for Optical Engineering
6877
DOI
出版ステータスPublished - 2008
イベントFree-Space Laser Communication Technologies XX - San Jose, CA
継続期間: 2008 1 242008 1 24

Other

OtherFree-Space Laser Communication Technologies XX
CitySan Jose, CA
Period08/1/2408/1/24

ASJC Scopus subject areas

  • 電子工学および電気工学
  • 凝縮系物理学

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